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Title: Next-to-leading order weighted Sivers asymmetry in semi-inclusive deep inelastic scattering: three-gluon correlator

We study the three-gluon correlation function contribution to the Sivers asymmetry in semi-inclusive deep inelastic scattering. We first establish the matching between the usual twist-3 collinear factorization approach and transverse momentum dependent factorization formalism for the moderate transverse momentum region. We then derive the so-called coefficient functions used in the usual TMD evolution formalism. Finally, we perform the next-to-leading order calculation for the transverse-momentum-weighted spin-dependent differential cross section, from which we identify the QCD collinear evolution of the twist-3 Qiu-Sterman function: the off-diagonal contribution from the three-gluon correlation functions.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. Indiana University , Bloomington, IN
  2. Jefferson Lab, Newport News, VA
  3. Los Alamos National Laboratory, Los Alamos, NM 87545
  4. Los Alamos National Laboratory, Los Alamos
Publication Date:
OSTI Identifier:
1224702
Report Number(s):
JLAB-THY-15-2137; DOE/OR/23177-3597
DOE Contract Number:
AC05-06OR23177; AC52-06NA25396
Resource Type:
Conference
Resource Relation:
Journal Name: Proceedings of Science; Journal Volume: DIS2015; Conference: DIS 2015, April 27 - May 1, 2015, Southern Methodist University, Dallas, Texas
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS